Rolling mill



June 23, 1931; K'RQNEN'BERG 1,811,586

I ROLLING MILL Filed Aug. 28, 1929 3 Sheets-Sheet 1 E91. Ely/.2.

June 23, 1931-.

R. KRONENBERG ROLLING MILL Filed Aug. 28', 1929 a Shee ts-Sheet 2 //7 venfo/z- June 23, 1931. R. KO NENBERG ROLLING MILL Filed Aug; 28, 1929 3 Shee ts-Sheet 3 Fly. 7.

lnvenfor:

Patented June 23, 1931 UNITED STATES BUDOILI' KBONENBERG, OF BAITS KBONENIBERG, GERMANY BOLLIINLG m1.

. Application filed AugustZS, 1929, Serial No.

This invention relates to certain new'and useful improvements in rolling mills of that general type shown in 1 my Patent No. 1,697,012, and resides in an improved con- I struction and arrangements of parts, as will be more fully hereinafter described.

The invention is'illustrated diagrammati- Qcally and by way of example on' the accompanying drawings, on which Figure 1 is a vertical axial section through a rolling mill designed according to this invention, and Figure 2 is a side view of this rolling mill. Figure 3 is a view similar to Fig. 1, but drawn to a reduced scale with respect thereto, and shows a constructional form of the mill in which the centre of oscillation for the support of one of the rollers can be shifted for the purpose of utilizing the centre axial length of the operating portions 90 of the rollers. Figure 4 is a side-view of this constructional form, and Figure 5 a section through the upper half of Fig. 3 in the line V-V thereof. Figure 6 is also a view similar to Fig.1 showing another modication concerning the shifting of the centre of oscillation, and Figure 7 is a side-view (of the modification.

It is, in the constructional form shown in Figures 1 and 2, assumed that the roller (1 is to be re-ad'usted by means of the supporting body'i or the two bearings f and h. The supporting body icontacts with the 'body which in turn can be re-adjusted in ,knownjmanner by the ressure spindles m and n. In the body k is supported a shaft which can. be turned by means of a handwheel or the like. To this shaft are affixed cog-wheels 51 and 52, of which one (pref: erably the wheel 52) is easily detachable.

"- The two wheels 51 and 55 on the one side and 52 and 56 on the other side being diflerent in such a measure that the suitable ratio of speed is attained. The wheel 55 is firmly aflixed to the pressure bolt 57, and the cog- 45 wheel 56 is also firmly secured to the pressure-bolt 58. Both bolts have screw-threads 59 and 60 at their supporting places, and the corresponding places in the members 61 and 62 in which said bolts are located 'are correspondingly threaded. When the shaft 50 889,007, and in Germany January 29, 1929.

is turned in the one or the other direction, the bolts 57 and 58 are turned correspondingly and simultaneously therewith moved axlally, which is true, however, also of the member 63 of the supporting member 2'. It is suited to the purpose to insert pressuretransmitting members 64 'and 65 between said'member 63. and the said bolts.

When the first adjustment is to bemade, first the spur-wheel 52 is removed from the shaft 5.0, and, now the pressure bolt 58 is firmly pressed against the member 63 which in turn is thereby firmly pressed against the bolt 57. Then the wheel 52 is again affixed'to the shaft 50 in such a position that a certain tension exists between its teeth and those of the cog-wheel .56. In this way a certain preliminary tension between the bolts 57 and 58 is attained, in that the several individual cog-wheels are all firmly connected with their appertaining shafts, and by that preliminary tension any end play or lost motion is completely obviated.

Concerning now the construction shown in Figures 3-5, the bodies or members i and are practically such as in Figure 1, the member is being also in this case concave on its bottom face and the member i'being convex on its top face. The two members are located between ide members 7 0 and 71, of which 71"can ollow the oscillatory movement of the member 11, but which both (70 and 71)' cannot (counter to the arrangement in Fi res 1 and 2) be shifted in the axial directlon of the rollers d and a. The crosssectional shape of the said guide members 70 and 71 appears distinctly from Figure 5. The guide member 70, resembles in transverse section an inverted U and embraces or encloses the concave body member is,

whereas the guide member 71, more precise- 1y, its upper portion, resembles in transverse section a U and embraces or encloses the convex body member 71. At each frontal side of the guide member 70 are horizontal bridges 72, of which :ach supports a pressure s indle 73, and 74 respectively, by which 0th body members a" and k can be shifted in and between said guide members 70 and 71, both members z" and is being screws 73 and 74. The threaded holes pro-.

vided in the body 2" for the reception of the screws 75 are at those faces where they terminate so extended horizontally in opposite directions as to form slots 76 (Fig. 3) in which the ends of said bolt-s can be shifted and which determine the maximum length of the shifting of the said body 2'. The slots 76 are formed in the part 71. This maximum length is indicated in Fig. 3 by the dotted line 77. Within the length of this line any desired point can be chosen as centre of oscillation, so that also if narrow rolling material is to be dealt with the operative circumferential surface of the rollers can be fully utilized. The part i is oscillated as shown in my prior patent, above referred to.

In the third constructional form shown in Figs. 6 and 7, the members i and k are practically the same as in Figure 3.. The concave member la is stationary and the convex member 71' can be turned in it so as to vary the pressure which the rollers exert uponthe material to be rolled. The mechanlsm for thus turning said body i may be of any desired design, for instance such as has already been described with respect to the other figures.

When the body 1' is moved relatively to the body I: the oscillatory axis 80 maintains always its osition, vi'z, in themiddle plane of the mil. But the two rollers n. and 0!, together with their braces f and h, as well 7 and h, and the supporting bodies 71 and 81, can be shifted laterally and parallel to the axis of the rollers, whereas the bodies 1" and is do not take part in that shifting. If the rollers together with the supporting parts are moved in one or the other of the possible two directions another point in the oscillatory axis 80 forms the centre of oscillation. The operating circumferential surfaces of the rollers can, thus, be used and utilized at any desired portion where the material to he rolled may be passed through.

The extreme positions-of the parts f, h,

,71 and 81 areindicated by dotted lines in Fig. '6.

No claim is made herein to the constructiognsihown in Figures 3, 4, 5, 6 and 7 at I claim is:

L A rolling mill, comprising rollers, in

. combination with one of the rollers, an adjusting member provided ,for it and located above, and being coupled with. it, a projection extending forth from the middle portion of said member; threaded bolts engagmg said projection parallel to the axis of said roller on the two sides concerned, correspondingly threaded stationary members in which said bolts are supported; cogwheels on the free ends of the bolts; other cog-wheels meshing with those first mentioned; a shaft to which said other cogwheels are secured, and means for turning said shaft.

2. A rolling mill, comprising rollers, in combination with one of the rollers, an adjusting member provided for it and located above, and being coupled with it, a-projection extending forth from the middle portion of said member; threaded bolts engaging said projection on opposite sides thereof; the axes of said bolts being parallel to the axis of said roller, correspondingl threaded stationary members in which sai bolts are supported; cog-wheels on the free ends of the. bolts; other cog-wheels meshing with those first mentioned; a shaft to which said other cog-wheels are secured, one of these other wheels being firmly afiixed to theshaft, the other being detachable therefrom and located near an end of the same; and means for turning the said shaft, these means being located at that end of the same where the firmly fixed cog-wheel is situated, substantially as set forth.

3. A rollingmill, comprising, in combination with one of the rollers and with an adjusting member provided for' it and located above, and being coupled 'with it, a projection extending forth from the middle portion of said member; a member arranged above said adjusting member; a shaft traversing said last mentioned member parallel to the axis of said roller; means for turning said shaft; means for engaging said projection parallel to the axis of said roller on the two sides concerned and motion-transmitting means inserted between said latter means and the said shaft, for the purpose set forth.

4. A rolling mill, comprising, in combination with one of the rollers and with an adjusting member provided for it and located above, and being coupled with it, a projection extending forth from the middle portion of said member; a member arranged above said adjusting member; a shaft traversing said last mentioned member parallel tothe axis of said roller; threaded bolts engaging said projection parallel to the axis of said roller on the two sides concerned,

correspondingly threaded stationary members in which said bolts are supported, and motion-transmitting means inserted between said bolts and the said shaft, for the purpose set forth.

5. A rolling mill, comprising, in combination with one of the rollers and with an adjusting member provided for it and lo- 'cated above, and being coupled with it, a projection extendin forth from the middle portion of said mem er; a member arranged 6 above said adjusting member; a shaft traversing said last mentioned member parallel to the axis of said roller; threaded bolts to engage said projection supported; cog-wheels on the free ends of the bolts 10 other cog-wheels meshing with those first mentioned and being afiixed to said shaft,- one of said other wheels being firmly afiixed to the shaft, the other being detachable therefrom, substantially and'for the purpose,

5 as set forth.

In testimony whereof I aflix my signature.

RUDOLF KRONENBERG. 

